Safety-razor.



M. G. SHARPNAOK.

SAFETY RAZOR APPLICATION FILED MAY 24, L913.

Patented Mar. 10, 191 1v 2 SHEETS-SHEET l.

I I. C. SHARPNACK.

SAFETY RAZOR.

APPLICATION FILED MAY 24,1912

1,089,727. Patented Mar. 10, 19m

2 SHEETS-SHEET 2.

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MATTHEW SHARPNACK, F PRESCOTT, ARIZONA.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed May 24, 1913. Serial No. 769,596.

To all whom it may concern Be it known that I, MATTHEW C. SHARP- NACK, acitizen of the United States, residing at Prescott, in the county ofYavapia and State of Arizona, have invented a new and useful Improvementin Safety-Razors, of which the following is a specification.

My invention relates to an improvement in the class of safety-razors, inwhich the blade nism within it; Fig.

is oscillated on the blade-plate, to cut like motor in the razor-handle.

In the accompanying drawings, Figure 1 is aview in rear elevation of myimproved safety-razor; Fig. 2 is an enlarged view of the hollow handleand blade-actuating stem extending from it, with the face-plate of thehandle removed to display the motor-mocha 3 is a view in elevation ofthe soeketed blade-plate; Fig. 4 is a similar view of the blade; Fig. 5is an inner face view of the keeper; Fig. 6 is a view in seetionalelevation, the section being on line 6, Fig. 2; Fig. 7 is an enlargedsection on line 7, Fig. 1; Fig. 8 is a view like that presented inFig.2, showing a modified construction; Fig. 9 is a view in sectionalelevation, the section being taken on line 9, Fig. 8; Fig. 10

the sickle in a harvesting machine, by a is a plan view of the front endof the safetyrazor, and Fig. 11 is a similar viewof the same with theguard-plate removed.

Referring more 7, inclusive:

The handle 12 is hollow and has a neck 13 on its forward end. IVithinthe handle is confined a leaf-spring 1 1, with one end engaging the bentend of a lever 15 fulcrumed between its ends on thejournal 16 of a gearparticularly to Figs. 1 t0 17, shown mutilated, to which the lever ispinned at opposite sides of the fulcrum; and

" the lever Widens toward its opposite end and contains therein anarc-shaped slot 18, adjacent to which is pivotally connected with it, atits inner, extended corner, the inner end of a finger or thumb piece 19working through a slot in a side of the handle. -A pinion 20 meshes withthe teeth of the gear 17 and is on a gear-wheel 21 journaled in thehandle, the journal 22 passing through the lever-slot 18. On a bearing23 provided in the handle near its forward end, and in the back-plate ofthe handle, is journaled a pinion 24 carrying on its journal a camcomprising a disk 25 provided with an eccentric stud 26. A sleeve 27 isconfined reciprocatingly in the forward end of the spring is tensione'dand upon releasing the finger-piece to permit the spring to recoil, thegearing is actuated to rotate the cam and actuate its stud 26 to work inthe slot,29 and thereby reciprocate longitudinally the sleeve 27 andwith it a stem 30 'secured therein.

The blade-plate 31 has a thimble 32 extending from one end to littightly over the neck 13, but permitting it to be turned therein foradjusting the blade-plate thereon for the convenience of the user inshaving. Guide-lugs 32 are provided on the face of the blade-plate toextend centrally of the length of the plate from its opposite edges, anda central longitudinal groove 33 extends in the face of the blade-platefor the stem 30 to work in. The blade 34, which is confined, as usual,by a retaining plate 35 to be reciprocated lengthwise on the face of theblade-plate and cut at either edge, contains slots 36 centrally in theends for guiding it on the lugs 32; and the stem engages at its bentforward end the blade at a central aperture 37 in the latter.

The user, by reciprocating the finger-piece 19, as with his thumb,causes the spring motor, composed of the spring, the lever and gears,with the cam, in the handle, in reciprocating the stem 30, to oscillatethe blade to exert its cutting action; the gearing being such as tocause each stroke of the thumb or finger piece to effect severalrcciprocations of the blade.

In the modified construction illustrated in Figs. 8 to 11, inclusive,the main difference from the construction already described, is that thestem 30 is provided in the form'of a lever 30 (Figs. 8' and 9) fulcrumcdbetween its ends, and actuatcdby the cam to reciprocate the blade 34transversely of-the handle. The hollow neck 13 is longer than the neck13, and carries a blade-plate 31' on its forward end, preferably as anintegral part thereof, to extend transversely of the handle. 15 againsta spring 14, the lever being pinned to a mutilated gear-wheel 17,fulcrumcd at 16 and containing a slot 18 through which extends thejournal of a. gcarwheel 21 carrying a pinion 2O meshing with the gear17,

The finger-piece 19 works the lever 'justed on the cut, this beingpern'iitted by the slots 37' and .40; and the nuts serve,

by Letters Patent is and the wheel 21 driving a pinion 'having a disk25.011 its journal and provided with an eccentric stud 26; all as'shownand described with reference to Figs. 1 to.?, inclusive. The lever 30 isfulcrumed betweenits ends in the neck 13 to engage at its offset slottedinner end with the cam-stud and, at its opposite endtransverse slot 37in a blade 3%, midway between its ends, the bladeplate adapting thisblade to cut only at one edge; and the recesses 36 in the blade-endsreceive, for guidance, nuts 38 on clampscrcws '39 working throughtransverse slots 40 in the blade-plate near its ends. YVith the nuts 38loosened, the blade may be adplate to regulate its depth of bytightening them in'the adjusted position of the blade, to hold and guideit thereon."

-I realize that considerable variation is possible in the details otconstruction thus specifically shown and described, and I do 1. In asafety-razor, the combinationof a hollow handle, a .motor housed in-thehandle, comprising a spring-pressed lever fulcrumcd between its ends,and a train of gears having its innermost membersecured to said lever, afinger-piecepivotally connected at its innerend with one end of saidlever and lon itudin'all .reciarocable through the handle-wall to rockthe same and drive, the motor, a blade-plate on the handle, a bladeconfined on said plate, and means connecting the. motor with the bladeto reciprocate the latter by manipulating the I -finger-piece.

desire to secure nal groove in its face,

2. In a safety-razor, the combination of a hollow handle, aspring-motor, train of gears, housed in the handle, a bladeplate on thehandle, a blade confined on said plate to be reciprocated thereon, afingerpiece longitudinally reciprocable' through the handle-wall andconnected with the motor for operating it, a cam connected with theoutermost gear of said train, and a stem having a slotted inner endengaged by the cam and engaging at its opposite end with the blade toreciprocate it by operating the motor.

8. In a safety-razor, the con-abinirtion of a. hollow handle having aneck on its forward end, a spring inotor in the handle and a blade-plateon the latter, a blade confined on said plate to be reciprocatedthereon, a finger-piece working handle for operating said motor, a camgeared to said motor and comprising a disk provided with an eccentricstud, a sleeve reciprocably confined in said neck and having a tongue onits inner end containing a transverse slot engaged by saidstud, and astem confined at one end in the sleeve and engaging at its opposite endthe blade to reciprocate it by the action of the motor.

4-. In a. sa a hollow handle having a neck on its forward end, aspring-motor in the handle, a

handle for operating said motor, abladeplate having .athimble at wh chit seats through a wall of the tety-razor, the combination ofincluding afinger-piece working through a wall of the I about said neck andcontaining a longitudii said plate to be reciprocated thereon, and astem having a cam-connection at one end with the motor and extendingthrough said neck and thimble and in said grove into ongagement at itsopposite end with the blade to reciprocate it by operating the motor.

Ml 'lTHElV C. SHARPNACK.

In presence of D. C. Tnoizsniv,

A. C. FISCHER.

a blade confined on

